Fix macro name.

rocso · rocso · commit 44daa2441137 · 2018-08-19T20:35:54.000+10:00
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,7 @@
+2018-08-19  Ross Johnson <ross dot johnson at homemail dot com dot au>
+
+	* context.h (__PTW32_PROCPTR): Added missing '__' prefix for v3.
+
 2018-08-10  Ross Johnson <ross dot johnson at homemail dot com dot au>
 
 	* Makefile (clean): remove *.idb files.
diff --git a/context.h b/context.h
@@ -62,7 +62,7 @@
 #endif
 
 #if defined(_ARM_) || defined(ARM) || defined(_M_ARM) || defined(_M_ARM64)
-#define PTW32_PROGCTR(Context)  ((Context).Pc)
+#define __PTW32_PROGCTR(Context)  ((Context).Pc)
 #endif
 
 #if !defined (__PTW32_PROGCTR)
